Research Article

A Large Retrospective Study of Epidemiological Characteristics of COVID-19 Patients in the North of Iran: Association between SARS-CoV-2 RT-PCR Ct Values with Demographic Data

Table 4

Demographic and comorbidity information of patients with positive SARS-CoV-2 rRT-PCR based on sex.

VariableTotal (N = 3246) number (%)Female (N = 1615) number (%)Male (N = 1631) number (%) value

Age
<132 (1)12 (0.7)20 (1.2)0.008
1–1484 (2.6)36 (2.2)48 (2.9)
15–2470 (2.1)40 (2.5)30 (1.8)
25–44676 (20.8)339 (21)337 (20.6)
45–641251 (38.6)663 (41)588 (36)
≥651133 (34.9)525 (32.5)608 (37.3)

Outcome
Discharge2915 (89.7)1482 (91.6)1433 (87.8)<0.001
Death335 (10.3)136 (8.4)199 (12.2)

Variable
Cardiovascular disease1039 (32)554 (34.2)485 (29.7)0.006
Diabetes896 (27.6)518 (32)378 (23.2)<0.001
Hypertension447 (13.8)259 (16)188 (11.5)<0.001
Brain and neurologic disorder142 (4.4)74 (4.6)68 (4.2)0.57
Kidney diseases132 (4.1)63 (3.9)69 (4.2)0.62
Respiratory disorder105 (3.2)52 (3.2)53 (3.2)0.95
Malignancy99 (3)53 (3.3)46 (2.8)0.44
GI diseases39 (1.2)23 (1.4)16 (1)0.24
Blood disorder26 (0.8)13 (0.8)13 (0.8)0.98
Liver disease25 (0.8)15 (0.9)10 (0.6)0.3
Others78 (2.4)50 (3.1)28 (1.7)<0.001
Comorbidity1839 (56.6)979 (60.5)860 (52.7)<0.001
No comorbidity1411 (43.4)639 (39.5)772 (47.3)

Age of 4 cases, unknown. P values of < 0.05 were considered statistically significant, and it is shown in bold.